The Tomlinson RO Faucet comes in 9 finishes for a better match for today's designer kitchen. These lead-free faucet fits to most brands and makes a great upgrade from the basic faucet that come with most RO systems. Features: Lever style handle Smooth operating ceramic disk element 360 degree swivel neck Protective spout tip that prevents after drip Modular air gap Preinstalled 1/4" tubing for quick connect Mounting hardware NSF listed to ANDI NSF standard 61-1999a 2 year warranty 2 1/4" base diameter (57mm) Drilled hole size needed for air gap: 7/8" Drilled hole size needed for non AG: 1/2" Additional Details ------------------------------ Product description: Point of use faucet by Tomlinson. High quality meets style with 9 different finishes. Lever style handle -high reach 12? neck that swivels 360 degree. Unique tip prevents ?after drip?. Modular air gap -Base diameter is 2-1/4? / 57mm. Mounting hardware included -Two year manufacturer warranty.